CN106910536B - Reactivity control system and nuclear reactor - Google Patents
Reactivity control system and nuclear reactor Download PDFInfo
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- CN106910536B CN106910536B CN201710254994.3A CN201710254994A CN106910536B CN 106910536 B CN106910536 B CN 106910536B CN 201710254994 A CN201710254994 A CN 201710254994A CN 106910536 B CN106910536 B CN 106910536B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
Embodiment of the invention discloses that a kind of reactivity control system for nuclear reactor and the nuclear reactor with reactivity control system.Reactivity control system includes：Multiple laterals, at least part of each in multiple laterals are suitable for being arranged in the reactor core of nuclear reactor；Various control particle；Multiple control particle input units, the multiple control particle input unit are respectively used to inputting various control particle into the upper end of lateral；And particle output channel, it is connect with the lower end of lateral, for exporting control particle from lateral.Reactivity control system according to an embodiment of the invention and nuclear reactor structure are simple.
Description
Technical field
The embodiment of the present invention is related to a kind of reactivity control system and nuclear reactor for nuclear reactor.
Background technology
Currently used pile reactivity control method be by will control rod intercalation reaction heap reactor core and carry out up and down
It moves to control neutron reaction, principle is absorbed to the neutron in reactor by absorber in control rod, is adjusted
Neutron balance in reactor, to achieve the purpose that reactivity control and shutdown.The control bar material of reactor is usually selected
B4The solid metals such as C or silver-indium-cadmium.
Invention content
The purpose of embodiments of the invention is to provide reactivity control systems and nuclear reactor, thus for example, can simplify
The structure of reactivity control system and nuclear reactor.
According to an embodiment of the invention, a kind of reactivity control system for nuclear reactor, reactivity control are provided
System processed includes：Multiple laterals, at least part of each in multiple laterals are suitable for being arranged in nuclear reactor
Reactor core in；Various control particle；Multiple control particle input units, the multiple control particle input unit be respectively used to by
Various control particle inputs the upper end of lateral；And particle output channel, connect with the lower end of lateral, for from point
Branch pipe(tube) output control particle.
According to an embodiment of the invention, the grain size of various control particle is different from each other.
According to an embodiment of the invention, reactivity control system further includes：Sorting unit, the sorting unit are used for general
The particle of grain output channel output is sorted, and the particle after sorting is supplied the correspondence in multiple control particle input units
Control particle input unit.
According to an embodiment of the invention, reactivity control system further includes：Lifting device, for promoting particle output channel
The particle of output simultaneously supplies the sorting unit.
According to an embodiment of the invention, various control particle includes particle and reactive of the reduction of intensified response
Grain.
According to an embodiment of the invention, various control particle further includes maintaining reactive particle.
According to an embodiment of the invention, each lateral includes main body and the cross-sectional area that is formed in the main body
Different multiple hole, to provide different reactivity when filling at least one of various control particle；Or each point
Branch pipe(tube) includes a variety of subtubes, and a variety of subtubes are respectively provided with the different multiple hole of cross-sectional area, to fill a variety of controls
Different reactivity is provided when at least one of pelleting.
According to an embodiment of the invention, multiple hole includes the circular hole of multiple diameter.
According to an embodiment of the invention, the circular hole of multiple diameter includes the circular hole of 4 kinds of diameters, the cross of the circular hole of 4 kinds of diameters
The ratio of area of section is：1:12:6:3.
According to an embodiment of the invention, reactivity control system further includes：It is arranged in each lateral upper end, is used for
Multiple particle storage tubes of the various control particle of multiple control particle input unit conveyings are stored respectively；And for will be multiple
The various control particle stored in particle storage tube imports the ingress pipe of lateral.
According to an embodiment of the invention, reactivity control system further includes：It is arranged in the lower end of multiple particle storage tubes use
In the valve of the opening for the lower end for opening and closing multiple particle storage tubes.
According to an embodiment of the invention, reactivity control system further includes：It is arranged and is used in the lower end of multiple laterals
Open and close the valve of the opening of the lower end of multiple laterals.
According to an embodiment of the invention, reactivity control system further includes：Controller, the controller control the valve
Opening and closing so that at least one of multiple laterals inject various control particle at least two control
Grain, and the section of different control particles is formed in the vertical direction.
According to an embodiment of the invention, a kind of nuclear reactor is provided, nuclear reactor includes：Reactor core；And above-mentioned reaction
Property control system, wherein the lateral at least part be arranged in the reactor core.
According to an embodiment of the invention, such as reactivity control system and the structure of nuclear reactor can be simplified.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the stereoscopic schematic diagram according to the nuclear reactor with reactivity control system of the embodiment of the present invention；
Fig. 2 is the schematic diagram according to the nuclear reactor with reactivity control system of the embodiment of the present invention；
Fig. 3 is the branched pipe in reactor core according to the nuclear reactor with reactivity control system of the embodiment of the present invention
The schematic diagram in road；And
Fig. 4 is the schematic diagram according to the lateral of the reactivity control system of the embodiment of the present invention.
Specific implementation mode
With reference to the accompanying drawings of the specification come illustrate the present invention specific implementation mode.
The embodiment of the present invention is illustrated below in conjunction with attached drawing, it should be understood that embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Fig. 1 is the stereoscopic schematic diagram according to the nuclear reactor with reactivity control system of the embodiment of the present invention；Fig. 2 is
The schematic diagram of nuclear reactor according to the ... of the embodiment of the present invention with reactivity control system；Fig. 3 is according to the embodiment of the present invention
The nuclear reactor with reactivity control system the lateral in reactor core schematic diagram；And Fig. 4 is according to this hair
The schematic diagram of the lateral of the reactivity control system of bright embodiment.It is according to an embodiment of the invention referring to Fig. 1 to 4
Nuclear reactor includes：Reactor core 17；And reactivity control system.At least part of the lateral of reactivity control system is set
It sets in the reactor core.
As shown in Figures 1 to 4, the reactivity control system 100 according to an embodiment of the invention for nuclear reactor includes：
Multiple laterals 15, at least part of each in multiple laterals 15 are suitable for that the reactor core 17 in nuclear reactor is arranged
In；Various control particle；Multiple control particle input units, the multiple control particle input unit are respectively used to a variety of controls
The upper end of pelleting input lateral 15；And particle output channel 5, connect with the lower end of lateral 15, for from point
The output control particle of branch pipe(tube) 15.The grain size of various control particle can be different from each other.In addition, various control particle can also be
Proportion is different, and the material of addition is different, and shape is different, or different in other aspects, so as to be sorted by sorting unit.
Various control particle may include the particle of intensified response can wrap with reactive particle or various control particle is reduced
The particle for including intensified response reduces reactive particle, and maintains reactive particle.
As depicted in figs. 1 and 2, according to an embodiment of the invention, reactivity control system 100 further includes sorting unit 7, institute
Sorting unit 7 is stated for sorting the particle that particle output channel 5 exports, and the particle after sorting is supplied into multiple controls
Corresponding control particle input unit in particle input unit.
As depicted in figs. 1 and 2, according to an embodiment of the invention, reactivity control system 100 further includes lifting device 6, is used
In the particle for promoting the output of particle output channel 5 and supply the sorting unit 7.
As shown in Figure 3 and Figure 4, each lateral 15 includes main body 151 and the cross section being formed in the main body 151
The different multiple hole of area, to provide different reactivity when filling at least one of various control particle；Or it is each
A lateral 15 includes a variety of subtubes, and a variety of subtubes are respectively provided with the different multiple hole of cross-sectional area, to fill
Different reactivity is provided when at least one of various control particle.Multiple hole may include the circular hole of multiple diameter.For example,
The circular hole of multiple diameter includes the circular hole of 4 kinds of diameters, and the ratio of the cross-sectional area of the circular hole of 4 kinds of diameters is：1:12:6:3.It is more
Kind hole can be substantially parallel, and roughly vertical extension.
As depicted in figs. 1 and 2, according to an embodiment of the invention, reactivity control system 100 further includes：It is arranged each
15 upper end of a lateral, multiple particles of the various control particle for storing multiple control particle input unit conveyings respectively
Storage tube 11,12,13；And the various control particle for will be stored in multiple particle storage tubes 11,12,13 imports branched pipe
The ingress pipe 14 in road 15.Particle storage tube 11,12,13 and ingress pipe 14 may be considered lateral 15 a part or
It is considered that not being a part for lateral 15.
As depicted in figs. 1 and 2, according to an embodiment of the invention, reactivity control system 100 further includes：It is arranged multiple
The lower end of particle storage tube 11,12,13, the valve of the opening of the lower end for opening and closing multiple particle storage tubes 11,12,13
Door.As depicted in figs. 1 and 2, according to an embodiment of the invention, it is arranged in the lower end of multiple laterals 15 for opening and closing
The valve of the opening of the lower end of multiple laterals 15.
As depicted in figs. 1 and 2, according to an embodiment of the invention, reactivity control system 100 further includes：Controller, it is described
Controller controls the opening and closing of the valve so that at least one of multiple laterals 15 inject various control particle
In at least two control particles, and formed in the vertical direction it is different control particles sections.
The reactivity control system 100 may be mounted in any type reactor system, and multiple laterals 15 can be with
Central axis around reactor core 17 is symmetrical.The quantity of lateral 15 can be specific according to real reaction heap situation
Setting, can select structural material identical with reactor core 17 to be made.At least part of lateral 15 can extend vertically.
Example according to the present invention, as shown in Figures 1 to 4, reactivity control system 100 includes：Lateral 15, described point
Branch pipe(tube) 15 is arranged in the reactor core 17 of nuclear reactor, the control for neutron reaction in reactor.Various control particle point
Not Wei reactive reinforcing material, neutron absorber material and reactivity maintain material, input channels for these three control particles
Ring main road 1,2,3 and lateral 15 are respectively included, the input channel of each control particle all includes a main pipeline
1,2,3 and a plurality of lateral being attached thereto, every lateral include as the vertical of particle storage tube 11,12,13 again
Section and as ingress pipe 14 convergence section.Main pipeline 1,2,3 and lateral are respectively positioned on the top of lateral 15, are respectively used to
Reactive reinforcing material, neutron absorber material and reactivity are maintained in material input lateral 15.Under lateral 15
End connection particle output channel 5, particle output channel 5 has certain angle of inclination, for being exported from lateral 15 by more
The control particle or its mixture of a control particle input unit input.Reactivity control system 100 further includes reactive monitoring
Device, the reactivity monitoring device is set to the top, middle part and lower part of lateral 15, for monitoring heap core inner in real time
The reactivity of neutron, and monitoring information is sent to control particulate control device, such as electrically operated valve.Control particulate control device
Be located at control each lateral of particle input channel at particle storage tube 11,12,13 (vertical section) lower end, lateral
15 upper end inlet and the lower end of lateral 15 and 5 interface of particle output channel are respectively used to adjust corresponding position
Control input, output and flow, the flow velocity of particle.Such as electrically operated valve etc. is controlled by controller.Reactivity control system 100
Further include control particle lifting device 6, the control particle lifting device 6 is located at 5 downstream of particle output channel, for its is defeated
The control particle gone out is promoted to the control particle sorting apparatus 7 above reactor core.Control particle sorting apparatus 7 is located at control particle and carries
The downstream of device 6 is risen, the upstream of particle input channel is controlled, for the mixing elevated control particle to be sorted, weight
It is new to be divided into three kinds of control particles, and inject in three kinds of control corresponding input channels of particle.
According to an embodiment of the invention, as shown in Figures 3 and 4, the lateral 15 is in nuclear reactor 17
Heart line arranges, and every lateral 15 includes the main body 151 of hexagonal prisms and the cylinder for four kinds of sizes being formed in inside main body 151
The top in shape hole, each lateral 15 is connected with the convergence section 14 in control particle lateral, and lower part is defeated with particle
Go out the connection of pipeline 5.
According to an embodiment of the invention, the main body 151 of lateral 15 can choose high temperature resistant, radiotolerant ceramics material
Material, such as carbide, nitride or oxide ceramics are (for example, zirconium oxide, aluminium oxide, nitridation pick, silicon carbide etc., and by this
The heat-resisting material that a little material blends are constituted) or metal alloy (Hastelloy) etc. make the main body 151 of hexagon, it is main
It is respectively runner of the cylindrical hole of D1, D2, D3, D4 as control particle that four kinds of diameters of different number are arranged on body 151.Four kinds
The corresponding four kinds of cross-sectional areas in hole of diameter are respectively S1, S2, S3, S4, have following relationship between them：S1=12*S2=
6*S3=3*S4.
Another kind embodiment according to the present invention, lateral 15 is also designed to the form of no main body, directly by not
Pipeline with four kinds of diameters of quantity is arranged and is fixed by certain design requirement, and periphery is wrapped up using hexagon shell, while being divided
The top and bottom of branch pipe(tube) 15 are provided with trepanning end cap, and the position of opening of end cap is corresponding with corresponding pipeline position, pipeline,
Outer envelope and end cap all have certain thickness, and pipeline wall thickness could be provided as 2.5~5mm, and outer envelope wall thickness and end cap can divide
It is not set as 3.5~5mm, material can choose high temperature resistant, radiotolerant pottery ceramic material, such as carbide, nitride or oxidation
(such as zirconium oxide, aluminium oxide, nitridation pick, the silicon carbide etc., and the high temperature resistant material that is made of these material blends such as object ceramics
Material) or metal alloy (Hastelloy) etc..
According to an embodiment of the invention, three kinds of control particles are spherical or spherical, but diameter is different.Its
In, it can be in boron carbide etc. that increased response material, which can be beryllium carbide, beryllium oxide isotonic fertile material, neutron absorber material,
Sub- absorbing material, maintenance material can be the materials such as aluminium oxide, magnesia.
According to an embodiment of the invention, particle output channel 5 includes multiple laterals and ring main road, described each
The 15 times outlets of the upper port of a lateral and lateral are connected, the ring main road of lower port and particle output channel 5
Connection.
According to an embodiment of the invention, the ring main road of particle output channel 5 is in respect to the horizontal plane 0 degree~90 degree
It tilts, for example, the inclination angle of the ring main road of particle output channel 5 with respect to the horizontal plane enables particle to be moved by gravity.
According to an embodiment of the invention, it is connected with control particle in the bottom in the ring main road of particle output channel 5
Collection device 16, the control particle in controlling particle collection device 16 will be collected by controlling the elevator in particle lifting device 6
It is promoted to the control particle sorting apparatus 7 of 17 top of reactor core.
According to an embodiment of the invention, control particle sorting apparatus 7 is the control particle that will be mixed, according to particle
The size of diameter or grain size is sorted into three kinds of different control particles, is injected separately into corresponding input channel or defeated again
Enter device.
According to an embodiment of the invention, the reactivity control system for nuclear reactor further includes：It is arranged anti-
Answering property reinforcing material input channel 1, neutron absorber material input channel 2, reactivity maintain the ring main of material input channel
Particle transmission device in road 3, for well-graded control granular materials to be delivered to respectively at respective branch pipeline 15.Particle
Transmission device can be equipped with the annular roller conveyor of opening in the inlet of respective branch pipeline 15, and in each opening
Front or behind is provided with convergence baffle, so that particle is converged to the center of roller-way while rolling, particle transmission device
Also other conveyers may be selected.
Reactivity control system according to an embodiment of the invention for nuclear reactor further includes：Valve, which can
With the connection being connected and disconnected between input channel, output channel and lateral 15, and the size of control valve can be passed through
Come input, output flow and the flow velocity of adjusting control particle.
According to an embodiment of the invention, reinforcing material can intensified response heap reactivity, for the reactor start-up stage or
The loss of person's latter stage fuel lifetime compensatory reactionBu Changfanying；Absorbing material can reduce the reactivity of reactor, for reducing reactivity or
Emergency shut-down；It maintains material that can keep the existing reactivity of reactor, does not enhance the reactivity for also not reducing reactor.
Reactivity control system according to an embodiment of the invention for nuclear reactor can effectively improve control particle
The accuracy of absorption efficiency and neutron-absorbing to neutron.
Figures 1 and 2 show that the nuclear reactor reactivity control system of the embodiment of the present invention, Fig. 3 are shown according to this hair
The reactivity control system reactor core 17 of bright embodiment and the cross section of lateral 15, Fig. 4 is shown to be implemented according to the present invention
The cross section of lateral 15 in the reactivity control system of example.
Nuclear reactor according to the ... of the embodiment of the present invention includes：Reactor core 17；And reactivity control system 100.Reactivity control
The lateral 15 of system 100 processed is arranged in the reactor core 17.As shown in Figures 1 to 4, the nuclear reactor of the embodiment of the present invention
Reactivity control system 100 includes：Reactive reinforcing material input main pipeline 1, neutron absorber material input main pipeline 2, reaction
Property maintain material input main pipeline 3, lateral 15, particle output channel 5, control particle lifting device 6, control grain sorting
Device 7 and reactive monitoring device for being measured in real time to neutron reaction situation in reactor core and for adjusting material flow
The components such as the valve in fast, flow control particulate control device.
As shown in figure 3, the control system may be mounted in any type reactor system, it is secondary to face such as critical pile
Boundary's reactor.Lateral 15 is symmetrical relative to the axis center of reactor core 17.The quantity of lateral 15 can root
Factually reactor situation in border is specifically arranged.Lateral 15 can be hexagonal prisms structure as shown in Figure 4, can also be other ribs
Rod structure, such as quadrangular, pentagonal prism, are provided with the cylindrical bore of tetra- kinds of diameters of D1, D2, D3, D4 in lateral 15,
There is following relationship between various opening cross-sectional areas：S1=12*S2=6*S3=3*S4, reactor control particle according to practical feelings
Condition is flowed through out of specified duct.
As shown in Figure 1 and Figure 2, well-graded three kinds of control particle passes through pipeline 8,9,10 from control particle sorting apparatus 7
It is injected separately into reactive reinforcing material input main pipeline 1, neutron absorber material input main pipeline 2, reactivity and maintains material input
In main pipeline 3.It is transported to the particle at respective branch pipeline 15 respectively by particle is controlled by the pellet transportation device in pipeline
Storage tube 11,12,13 (such as vertical section), and filled up.Particle storage tube 11,12,13 at each lateral 15
The amount that (vertical section) accommodates control particle is more than the control particle that the 15 all ducts of lateral being attached thereto can accommodate
Total amount.The valve, lateral 15 of particle storage tube 11,12,13 (vertical section) lower end when starting at each lateral 15
Valve and particle output channel 5 and the valve of 15 interface of lateral above each cylindrical duct are in closed state.
Reactive control can be carried out according to following control method when concrete condition occurs：(1) when monitoring in reactor
The neutron reaction of some position is less than given threshold, then by the calculating of the controller in control particulate control device, opens
The 15 predetermined hole of valve and lateral of particle storage tube 11 (vertical section) lower end at the lateral 15 near corresponding position
Road valve makes enhancing granular materials be flowed into the corresponding duct of lateral 15 through ingress pipe 14 (branch converges pipeline)；(2) when
It monitors that the neutron reaction of some position in reactor is higher than given threshold, then opens at the lateral near corresponding position
Particle storage tube 12 (vertical section) lower end valve and lateral 15 specify duct valve, make neutron absorbing particles through ingress pipe
14 (branch converges pipeline) flow into the duct of lateral 15；(3) when the neutron for monitoring some position of lower section in reactor
Reactivity is higher than given threshold, and the neutron reaction of its some position of top is less than given threshold, then first opens corresponding positions
The valve and lateral 15 of particle storage tube 12 (vertical section) lower end at lateral near setting specify duct valve, make
Neutron absorbing particles are flowed into through ingress pipe 14 (branch converges pipeline) in the duct of lateral 15, and the neutron for injecting predetermined amount is inhaled
After receiving particle, the valve of particle storage tube 12 (vertical section) lower end at lateral is closed, opens at lateral 15
The valve of grain storage tube 11 (vertical section) lower end makes reactivity enhancing particle flow into lateral 15 through branch's convergence pipeline 14
In duct, vice versa；(4) when monitoring that pile neutron region with high reactivity and the low region of neutron reaction be separated by one
When segment distance, reactivity can be added in centre and control particle, Adding Way is maintained to be same as above.All injection reactions in lateral 15
Property enhancing particle, then be used for start reactor, if all injection neutron absorbing particles, be used for emergency shut-down.Control particle
Injection passes through gravity drive completely.
In view of the fineness and ease-to-operate of control, it is straight that tetra- kinds of D1, D2, D3, D4 is provided in lateral 15
The cylindrical bore of diameter has following relationship between various opening cross-sectional areas：S1=12*S2=6*S3=3*S4, four kinds of diameters
The number of cylindrical bore be respectively 1,12,6,6, reactivity when filling full neutron absorber material with single S2 circular holes is one
The global reactivity value of a base unit μ, entire lateral 15 are 60 μ.Different numbers, diameter can be selected big according to result of calculation
The reactive controlling value of the μ of -60 μ~60 is realized in the combination in small duct.If result of calculation is shown, the big duct of one diameter of selection
Or the duct for selecting a plurality of diameter small can meet demand for control, then preferentially the big duct of selection diameter is filled.Reactor
Interior multiple laterals 15 of placing can control the neutron of different zones respectively.It is inhaled using neutron in duct in negative reactivity control
The property received material uses neutron multiplication material or slowing material, in power distributed controll, one in positive reactivity control in duct
The lateral 15 that the different neutron control particle of injection or different zones can be segmented in a duct injects different neutron controls
Pelleting.Power distributed controll is mainly used for solving the non-uniform phenomenon of heap in-core netron-flux density, keeps its power density equal
It is even.
After the reactivity of reactor is adjusted to specified value, the valve of 15 lower section of lateral is opened, particle will be controlled
It is imported in particle output channel 5 by lateral 15, the particle output channel 5 with angle of inclination can import control particle
It controls in particle collection device 16, particle lifting device 6 to be controlled is waited to be promoted to control particle sorting apparatus 7, control
Bucket elevator, screw elevator etc. can be selected in grain lifting device 6.The control particle being promoted in control particle sorting apparatus 7,
It can be sorted by size, three kinds of different control particles are separated, and reinforcing material is injected separately by pipeline 8,9,10
It inputs main pipeline 1, absorbing material input main pipeline 2, maintain in material input main pipeline 3, carry out next round cycle.Control particle
Replacement do not influence the normal operation of reactor.The dosage for injecting each control particle of lateral 15 is needed according to practical need
It calculates.Changeover valve (for example, electronic rotation valve) can be used in valve, is adjusted and opens caliber size.
Reinforcing material inputs main pipeline 1, absorbing material input main pipeline 2, the particle in material input main pipeline 3 is maintained to pass
Bucket conveyor can be selected in defeated device.
Reactivity control system according to an embodiment of the invention can improve control particle to the control efficiency of neutron and
The accuracy of control range.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field
Technical staff can also make a variety of changes and modification without departing from the spirit and scope of the present invention, therefore all
Equivalent technical solution also belongs to scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (14)
1. a kind of reactivity control system for nuclear reactor, including：
Multiple laterals, at least part of each in multiple laterals are suitable for that the reactor core in nuclear reactor is arranged
In；
Various control particle；
Multiple control particle input units, the multiple control particle input unit are respectively used to the input point of various control particle
The upper end of branch pipe(tube) is to be injected at least one of various control particle in lateral by gravity；And
Particle output channel is connect with the lower end of lateral, for exporting control particle from lateral.
2. the reactivity control system according to claim 1 for nuclear reactor, wherein
The grain size of various control particle is different from each other.
3. the reactivity control system according to claim 1 for nuclear reactor further includes：
Sorting unit, the sorting unit is for sorting the particle that particle output channel exports, and by after sorting
Corresponding control particle input unit in the multiple control particle input units of grain supply.
4. the reactivity control system according to claim 3 for nuclear reactor further includes：
Lifting device, for promoted particle output channel output particle and supply the sorting unit.
5. the reactivity control system according to claim 1 for nuclear reactor, wherein：
Various control particle includes the particle and the reactive particle of reduction of intensified response.
6. the reactivity control system according to claim 1 for nuclear reactor, wherein：
Various control particle further includes maintaining reactive particle.
7. the reactivity control system according to claim 5 or 6 for nuclear reactor, wherein：
Each lateral includes the main body multiple hole different with the cross-sectional area being formed in the main body, with more in filling
Different reactivity is provided when at least one of kind control particle；Or
Each lateral includes a variety of subtubes, and a variety of subtubes are respectively provided with the different multiple hole of cross-sectional area, with
Different reactivity is provided when filling at least one of various control particle.
8. the reactivity control system according to claim 7 for nuclear reactor, wherein：
Multiple hole includes the circular hole of multiple diameter.
9. the reactivity control system according to claim 8 for nuclear reactor, wherein：
The circular hole of multiple diameter includes the circular hole of 4 kinds of diameters, and the ratio of the cross-sectional area of the circular hole of 4 kinds of diameters is：1:12:6:
3。
10. the reactivity control system according to claim 1 for nuclear reactor further includes：
Setting is in each lateral upper end, the various control for storing multiple control particle input unit conveyings respectively
Multiple particle storage tubes of grain；And
Various control particle for will be stored in multiple particle storage tubes imports the ingress pipe of lateral.
11. the reactivity control system according to claim 10 for nuclear reactor further includes：
It is arranged and is used to open and close the valve of the opening of the lower end of multiple particle storage tubes in the lower end of multiple particle storage tubes.
12. the reactivity control system according to claim 11 for nuclear reactor further includes：
It is arranged and is used to open and close the valve of the opening of the lower end of multiple laterals in the lower end of multiple laterals.
13. the reactivity control system according to claim 11 or 12 for nuclear reactor further includes：
Controller, the controller control the opening and closing of the valve so that at least one of multiple laterals are noted
Enter at least two control particles in various control particle, and forms the section of different control particles in the vertical direction.
14. a kind of nuclear reactor, including：
Reactor core；And
Reactivity control system described in claim 1, wherein at least part of the lateral is arranged in the reactor core
In.
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| CN105957562A (en) * | 2016-07-05 | 2016-09-21 | 上海核工程研究设计院 | Reactivity control sleeve |
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| JPH04286991A (en) * | 1991-03-18 | 1992-10-12 | Hitachi Ltd | Atomic reactor core |
| WO2011006512A2 (en) * | 2009-07-15 | 2011-01-20 | Mahmoud El-Sayed Dorrah | Temperature-reactive control module for nuclear reactors |
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| US5045275A (en) * | 1989-05-16 | 1991-09-03 | The Georgia Tech Research Corporation | Gaseous reactor control system |
| CN104145309A (en) * | 2011-10-03 | 2014-11-12 | 原子能转换公司 | Nuclear reactors and related methods and apparatus |
| CN104428839A (en) * | 2011-12-06 | 2015-03-18 | 泰拉能源公司 | Apparatus and methods for controlling reactivity in a nuclear fission reactor, and methods of fabricating a reactivity control apparatus |
| CN105118533A (en) * | 2015-09-09 | 2015-12-02 | 中国科学院近代物理研究所 | Reactivity control system, nuclear reactor and control method of nuclear reactor |
| CN105913881A (en) * | 2016-07-05 | 2016-08-31 | 上海核工程研究设计院 | Reactivity control ring |
| CN105957562A (en) * | 2016-07-05 | 2016-09-21 | 上海核工程研究设计院 | Reactivity control sleeve |
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